CN216483846U - High-efficiency integrated multifunctional photoelectric detection system - Google Patents
High-efficiency integrated multifunctional photoelectric detection system Download PDFInfo
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- CN216483846U CN216483846U CN202123221580.1U CN202123221580U CN216483846U CN 216483846 U CN216483846 U CN 216483846U CN 202123221580 U CN202123221580 U CN 202123221580U CN 216483846 U CN216483846 U CN 216483846U
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Abstract
The utility model provides a high-efficient integrated multi-functional photoelectric detection system for solve the output that current detection system adopted xenon lamp collocation spectrum appearance and optical lens to exist can't realize great area even light, can't accurate measurement or can't measure linear dynamic range data and adopt the technical problem that can't realize great luminous power output that the LED light source exists. The utility model discloses a laser instrument, signal generator and laser power control unit are connected respectively to the input of laser instrument, and the output of laser instrument passes through the test component phase-match in optic fibre and the camera bellows, and test component is connected with the digital source table. The utility model discloses an adopt multimode fiber or liquid core optic fibre to homogenize the less gaussian light of area and enlarge at laser output port to realize the even large tracts of land light output of optic fibre output.
Description
Technical Field
The utility model relates to a photoelectron material and device detection technical field, concretely relates to high-efficient integrated multi-functional photoelectric detection system.
Background
The photoelectric detector can convert light signals which are difficult to quantify into electric signals which can be accurately detected, and plays a great role in military, civil and scientific research, such as imaging, optical communication, chemical/biological sensing, environmental monitoring and the like. Generally, detectors are often used to detect weak optical signals, and therefore the light source selected for use in the detection system must be capable of achieving extremely low optical power output, such as on the order of nW or even pW. At present, various detection systems are available in the market, most of the systems adopt a combination of a xenon lamp, a spectrometer and an optical lens to realize a monochromatic low-power light output function, and the requirements of testing responsivity, specific detectivity and External Quantum Efficiency (EQE) can be basically met. However, this light source output scheme has two problems: firstly, the output of uniform light with a large area cannot be realized. The main reason for this phenomenon is that the EQE test requires that the spot area is smaller than the device effective area, so that the EQE test and the large-area uniform light output cannot be simultaneously achieved, which brings certain difficulty and larger workload for the test of the detection device with higher integration level; secondly, the linear dynamic range data cannot be measured accurately or measured. The main reason for this phenomenon is that the light source combination can only achieve light output with small power, and the test of linear dynamic range generally requires that the light source can achieve continuous output from small power (magnitude of nW and pW) to large power (about 100-200 mW), so the detection system using the light source combination often cannot achieve accurate linear dynamic range measurement. In addition, in the light source combination, the xenon lamp, the spectrometer and the lens system are high in cost, so that the whole manufacturing cost is high. The LED light source is often adopted in a laboratory to realize large-area uniform light output with single color and low power, the problem of large workload of a high-integration device can be solved to a certain extent, the cost of the LED light source is low, but the rated power of the LED often cannot realize large light power output. Under the circumstances, it is necessary and urgent to explore a set of detection system which can simultaneously realize multi-parameter testing and has low cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides an output, the unable accurate measurement or the unable linear dynamic range data of measuring and the unable great luminous power output's of realizing of unable realization great area homogeneous light that exists to current detecting system adoption xenon lamp collocation spectrum appearance and optical lens technical problem that can't realize that LED light source exists, the utility model provides a high-efficient integrated multi-functional photoelectric detection system is through adopting multimode optic fibre or liquid core optic fibre to homogenize the less gaussian light of area and enlarge at laser output port to realize the even large tracts of land light output of optic fibre output.
In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a high-efficient integrated multi-functional photoelectric detection system, includes the laser instrument, signal generator and laser power control unit are connected respectively to the input of laser instrument, and the output of laser instrument passes through optic fibre and the test component phase-match in the camera bellows, and test component is connected with the digital source table.
The side wall of the camera bellows is provided with a clamp sleeve matched with the optical fiber, and the optical fiber penetrates through the clamp sleeve and extends into the camera bellows.
The test assembly comprises an optical bracket, an optical filter rotating wheel and a test box, the optical bracket, the optical filter rotating wheel and the test box are sequentially arranged in the dark box along the laser signal emission direction, and the output port of the optical fiber extends into the dark box and then is fixed on the optical bracket; the optical filter rotating wheel is arranged on the first support, the test box is arranged on the second support, and the optical support, the optical filter rotating wheel and the test box are arranged on the bottom wall of the camera bellows in a sliding mode.
A guide rail is arranged on the bottom wall of the camera bellows along the laser signal emission direction, and sliders are arranged on the optical bracket, the optical filter rotating wheel and the lower part of the test box and are arranged on the guide rail in a sliding manner; and scales are arranged on the guide rail.
A baffle is arranged between the optical filter rotating wheel and the test box, and a perforation used for passing through a laser signal and a hole switch matched with the perforation are arranged on the baffle.
The heights of the filter rotating wheel, the test box, the through hole in the baffle and the output port of the optical fiber are consistent.
Compared with the prior art, the utility model discloses use the homogenization laser to have following advantage as the light source:
1. the laser homogenized by the multimode optical fiber or the liquid core optical fiber can not only realize uniform large-area illumination which cannot be realized by a xenon lamp, a spectrometer and a lens combined light source, but also realize high-power illumination output which cannot be realized by an LED light source, and can efficiently and conveniently realize the linear dynamic range test of the detector.
2. The matched clamp sleeve is specially arranged on the output end of the homogenizing optical fiber on the dark box, so that lasers with different wavelengths can be replaced according to the requirements of the optimal working wave bands of different devices to be tested, visible light wave bands and infrared wave bands are covered, the limitation of the output wavelength range of a xenon lamp, a spectrometer and a lens combined light source does not exist, and the limitation of the wavelength caused by the few types of LEDs does not exist.
3. Each part in the dark box is integrated on a guide rail with scales, and after different light sources or test boxes of different types are replaced, the optimal light irradiation area can be realized by adjusting the distance between the optical fiber output end and the test boxes.
4. The baffle is arranged between the optical filter rotating wheel and the test box, so that the stray light of the laser can be completely shielded when the dark state I-V characteristic is tested again under the laser starting state, and the accuracy of the dark state I-V characteristic under the laser starting state is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a signal generator 1, a laser 2, a laser power control unit 3, an optical fiber 4, a hoop sleeve 5, a camera bellows 6, an output port 7, an optical support 8, a filter rotating wheel 9, a baffle 10, a test box 11, a guide rail 12 and a digital source meter 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a high-efficient integrated multi-functional photoelectric detection system, including laser instrument 2, signal generator 1 and laser power control unit 3 are connected respectively to the input of laser instrument 2, and signal generator 1 controls 2 transmission laser signals of laser instrument, and laser power control unit 3 is used for adjusting 2 transmission light signal's of laser instrument power size, adjusts the intensity of light promptly. During the experiment, lasers with different wavelengths can be selected according to specific experiment requirements. The output end of the laser 2 is connected with one end of an optical fiber 4, and the other end of the optical fiber 4 extends into a dark box 6. The optical fiber 4 may be a multimode optical fiber or a liquid core optical fiber. And be provided with on the lateral wall of camera bellows 6 with optic fibre 4 assorted clamp sleeve 5, optic fibre 4 passes clamp sleeve 5 and stretches into in camera bellows 6, and the clamp sleeve plays the effect of fixed optic fibre, still plays the inclosed effect of assurance camera bellows simultaneously. The clamp sleeve can be matched according to the size of the optical fiber output port, and the size of any camera bellows can be designed according to different functional requirements.
The optical fiber testing device is characterized in that a testing assembly matched with the optical fiber 4 is arranged in the camera bellows 6, the testing assembly comprises an optical support 8, an optical filter rotating wheel 9 and a testing box 11, and the optical support 8, the optical filter rotating wheel 9 and the testing box 11 are sequentially arranged in the camera bellows 6 along the laser signal emission direction. The optical bracket 8 is used for supporting the optical fiber 4, namely, the output port 7 of the optical fiber 4 extends into the dark box 6 and then is fixed on the optical bracket 8, and the output port of the optical fiber has a beam expanding function. The optical filter rotating wheel 9 can be used for adjusting the output intensity of the laser signal; the test box 11 is used for placing a specific device to be tested, i.e. different devices to be tested are matched with different test boxes, and the test box can also be individually customized according to the arrangement of different devices to be tested. The optical filter rotating wheel 9 is arranged on the first support, the test box 11 is arranged on the second support, the optical support 8, the optical filter rotating wheel 9 and the test box 11 are all arranged on the bottom wall of the camera bellows 6 in a sliding mode, and the distance between the optical support 8, the optical filter rotating wheel 9 and the test box 11 can be adjusted according to different experimental requirements. Specifically, a guide rail 12 is arranged on the bottom wall of the dark box 6 along the laser signal emission direction, sliders are arranged on the lower portions of the optical bracket 8, the optical filter rotating wheel 9 and the test box 11, and the sliders are respectively arranged on different positions of the guide rail 12 in a sliding manner. And the guide rail 12 is provided with scales, so that the positions and the distances among the optical support 8, the optical filter rotating wheel 9 and the test box 11 can be accurately obtained, and the accuracy of the experiment is improved.
Be provided with baffle 10 between light filter runner 9 and the test box 11, and offer the perforation that is used for passing through laser signal and with the hole switch that perforates the matching on the baffle 10, realize baffle 10 can also be to the stray light's of laser complete shielding under the condition that does not influence laser signal transmission simultaneously, further ensure the experiment effect.
The heights of the filter rotating wheel 9, the test box 11, the through hole in the baffle plate 10 and the output port 7 of the optical fiber 4 are consistent, so that the laser signal emitted by the laser can completely cover the device to be tested.
The outside of the camera bellows 6 is also provided with a digital source meter 13, a test box 11 of a test component in the camera bellows 6 is connected with the digital source meter 13 through a data line, and the digital source meter 13 is arranged for reading corresponding data such as current and voltage in the experiment process.
The photodetection system in this embodiment can be used for a current-voltage (I-V) characteristic curve test, an optical switch response (I-T) test, a detector responsivity (R), a specific detection degree (D), an External Quantum Efficiency (EQE), a Linear Dynamic Range (LDR) test, and the like. The specific test method is as follows:
the test processes of the responsivity (R) of the detector, the specific detection degree (D), and the External Quantum Efficiency (EQE) are as follows: and placing the device to be tested in a matched test box, and obtaining an IV curve in a dark state by using IV test software, wherein the baffle plate can completely shield the laser stray light. Then, the laser is turned on, the needed weak light power output is obtained by adjusting the laser power control unit and the optical filter rotating wheel, then the information such as the voltage test range, the step length and the like is set through special test software OPV-test (or other software for measuring the IV curve), the software is operated, and the corresponding current and voltage data is read by a digital source meter, so that the IV characteristic curve under the light power is measured. And finally, obtaining corresponding values according to formulas and the values. It should be noted that: because the laser light spot is homogenized and amplified, a plurality of devices to be tested on one substrate can be covered at the same time, so that the performance test of the devices to be tested under the condition of not replacing the positions of the devices to be tested is realized, and the detection system has the outstanding characteristic.
The test procedure for Linear Dynamic Range (LDR) is: connecting a signal generator to a laser, obtaining light output of periodical brightness, then obtaining light output from smaller power (nW/pW) to larger power (the design power is 200mW, and the design power can be increased or decreased according to actual requirements) by adjusting a laser power control unit and a filter rotating wheel, and recording I-T curve data under different light power conditions. It should be noted that: in order to obtain smaller power or larger power, besides customizing the output power of the laser, the distance between the test box of the device to be tested and the filter rotating wheel can be adjusted by utilizing the guide rail under the condition of the existing laser, so that the target output power can be obtained by adjusting the size of the light spot. All components of the whole light path are integrated on the guide rail through the slidable bracket, so that the whole light path for LDR test can be continuously tested by the IV test light path without changing, and the operation is simple and convenient. And finally, obtaining an LDR value according to a formula.
The utility model discloses an adopt multimode fiber or liquid core optic fibre to homogenize the less gaussian light of area and enlarge at laser output port to realize the even large tracts of land light output of optic fibre output. Meanwhile, the optical fiber output end extends into the dark box through a specially matched clamp sleeve, and the optical fiber output end is provided with an optical filter rotating wheel (manual or electric) provided with a plurality of neutral density optical filters with gradually-improved attenuation rates, so that continuous light output with different powers (nW-mW) can be realized by adopting a mode of adjusting the combination of the current/voltage of the laser and the attenuation rate of the optical filter. Furthermore, the utility model discloses integrated use the high-efficient integrated light detection system of homogenization laser as the light source, can realize simultaneously that I-V characteristic curve tests, photoswitch response (I-T) test, detector responsivity (R), than detect degree (D), External Quantum Efficiency (EQE) and Linear Dynamic Range (LDR) etc. are many parameter testing to the alternating temperature test module can be integrated to this system, thereby obtain the device electrical characteristics under the temperature condition not to ask; the whole system has low cost and is more suitable for large-area popularization.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high-efficient integrated multi-functional photoelectric detection system which characterized in that: including laser instrument (2), signal generator (1) and laser power control unit (3) are connected respectively to the input of laser instrument (2), and the output of laser instrument (2) passes through optic fibre (4) and the test component phase-match in camera bellows (6), and test component is connected with digital source table (13).
2. An efficient integrated multifunctional photodetection system according to claim 1, characterized in that: be provided with on the lateral wall of camera bellows (6) with optic fibre (4) assorted clamp sleeve (5), optic fibre (4) pass clamp sleeve (5) and stretch into in camera bellows (6).
3. An efficient integrated multifunctional photodetection system according to claim 1 or 2, characterized in that: the testing assembly comprises an optical bracket (8), an optical filter rotating wheel (9) and a testing box (11), the optical bracket (8), the optical filter rotating wheel (9) and the testing box (11) are sequentially arranged in the dark box (6) along the laser signal emission direction, and an output port (7) of the optical fiber (4) extends into the dark box (6) and then is fixed on the optical bracket (8); the optical filter rotating wheel (9) is arranged on the first support, the test box (11) is arranged on the second support, and the optical support (8), the optical filter rotating wheel (9) and the test box (11) are arranged on the bottom wall of the camera bellows (6) in a sliding mode.
4. A highly efficient integrated multifunctional photodetection system according to claim 3, characterized in that: a guide rail (12) is arranged on the bottom wall of the camera bellows (6) along the laser signal emission direction, and sliders are arranged on the lower parts of the optical bracket (8), the optical filter rotating wheel (9) and the test box (11) and are arranged on the guide rail (12) in a sliding manner; and scales are arranged on the guide rail (12).
5. An efficient integrated multifunctional photodetection system according to claim 4, characterized in that: a baffle (10) is arranged between the optical filter rotating wheel (9) and the test box (11), and a perforation used for passing through a laser signal and a hole switch matched with the perforation are arranged on the baffle (10).
6. An efficient integrated multifunctional photodetection system according to claim 5, characterized in that: the heights of the filter rotating wheel (9), the test box (11), the through hole in the baffle plate (10) and the output port (7) of the optical fiber (4) are consistent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123221580.1U CN216483846U (en) | 2021-12-21 | 2021-12-21 | High-efficiency integrated multifunctional photoelectric detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123221580.1U CN216483846U (en) | 2021-12-21 | 2021-12-21 | High-efficiency integrated multifunctional photoelectric detection system |
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| CN216483846U true CN216483846U (en) | 2022-05-10 |
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| CN202123221580.1U Active CN216483846U (en) | 2021-12-21 | 2021-12-21 | High-efficiency integrated multifunctional photoelectric detection system |
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